A massive black object with no lights flying ultra low over our home.

I had just gotten in the hot tub and put my head back and from that view I can see the sky over our home. It was a cloudy evening. No stars. I was wearing my glasses looking up at sky. Suddenly this massive object - totally black with no lights came suddenly in view and went right over our house. in a matter of a second or two. So quickly. So large. No sound at all. I was not frightened as it went by so quickly but I kept my eyes up thinking maybe it would come by again. I am 65 years old. I was not under the influence of any drug or alcohol. I have never seen an object of that nature. I did draw it out as it is embedded in my brain. But it's shape was not in the shapes listed. I am in good health. I do not see things. But, I felt compelled to let someone know what I saw last night.